VEGA VEGAPULS 45 Profibus PA - Manual (Page 44)

44 VEGAPULS 42, 44 and 45 – Profibus PA
24908-EN-041227
OK
+ –
or
100.0%
at
m (d)
XX.XXX
Note:
The difference between the adjustment val-
ues of the lower product distance and the
upper product distance should be as large
as possible, preferably at 0 % and 100 %. If
the values are very close together, e.g. lower
product distance at 40 % (3.102 m) and
upper product distance at 45 % (3.331 m),
the measurement will be less accurate. A
characteristic curve is generated from the
two points. Even the smallest deviation be-
tween actual product distance and entered
product distance will considerably influence
the slope of the characteristic curve. If the
adjustment points are too close together,
small errors inflate to considerably larger
ones when the 0 % or the 100 % value is
outputted.
Adjustment with medium
Fill the vessel e.g. to 10 % and enter 10 % in
the menu "
Min. adjust“ with the "+“ and "–“
keys. Then fill the vessel, e.g. to 80 % or
100 % and enter 80 % or 100 % in the menu
"
Max. adjust“ with the "+“ and "–“ keys.
5. Conditioning
+
OK
Ad-
just-
ment
in
m(d)
0.0%
at
m (d)
XX.XXX
OK
+ –
or
Set-up
The distance indication flashes
and you can choose "feet“ and
"m“.
Confirm the adjustment with
"
OK“.
With " +“ and "–“ you adjust the
percentage value for the min.
value (example 0.0 %).
The entered percentage value
is written in the sensor and the
min. distance value corres-
ponding to that percentage
value flashes.
With the " +“ or "–“ key you can
assign a level distance (ex-
ample 5.85 m) to the previ-
ously adjusted percentage
value. If you do not know the
distance, you have to do a
sounding.
The adjusted product dis-
tance is written in the sensor
and the display stops flash-
ing.
You thereby adjusted the lower product dis-
tance as well as the percentage filling value
corresponding to the lower product distance.
Note:
For level detection outside the operating range,
the operating range must be corrected accord-
ingly in the menu "
Sensor optimisation/Operat-
ing range“.
(max. adjustment)
Now you enter the max. adjustment (upper
product distance) (example 100 % and 1.270
m product distance). First you have to enter the
percentage value and then the product dis-
tance corresponding to the percentage value. Under the menu item " Conditioning“, you
assign a product distance at 0 % and at 100
% filling. Then, you enter the parameter and
the physical unit as well as the decimal point.
Signal
condit
ioning
Scal
ing
0 %
corres
ponds
XXXX
100 %
corres
ponds
XXXX
Deci-
mal
point
888.8
prop.
to
Mass
Unit
Kg
with
medium
Min.
adjust
at %
XXX.X
Max.
adjust
at %
XXX.X